Business Visa - B1

My interview is at 9:30 AM, 31st August 2015. I reached by 9AM.

After all the security checks and queues, I reached VO by 10:45AM.

There are 2 B1 visa rejects before me. Officer is asking everything in detail. He is very Young.

My interview Questions:

VO: Hi, Good Morning
Me: Good morning officer.

VO: Why are you going to US. Are you going for any meetings ?
me : I said that I am going to attend technical discussions.

VO : Where are you going to?
me: place xxxx,

VO: how long are you going to stay in US.
me: 4 Weeks

VO: Are you working for YYYY
me: Yes, I am from YYYY

VO: Can you give me your ID card?
me: I am wearing my ID card, handed over to him.

Looked the ID card bothsides :)

VO: How long are you working in ZZZ
me : 5 years

VO: What is your blood group ?
me : O+

VO: How long are you going to stay in US? //same question again.
me: 4 weeks

VO :Everything Straight forward, Your VISA is approved .

VO is browsing in the system most of the time, Didn't look at me almost
Before attending the interview, I have read many posts and prepared all the related Questions.
 I am confident for the interview. But the interview is very cool.

Thanks to this forum for giving me the confidence.